sampling point
Unnamed River U/S Of Rowston Stw

Description	HEADWATERS OF UNNAMED RIVER U/S ROWSTON STW
Sampling point ID	AN-USRWSTN
Type	Freshwater – Rivers
Status	open
Location	easting northing: 508354 357000 lat lon: 53.099199, -0.383158
Area	Lincolnshire And Northamptonshire
Sub-Area	North & South Team Sub Area
Summary	93 samples taken between 2024 and 2011

Determinands identify a property which can be measured on a sample or the sampling environment, together with the units in which the result of that measurement will be expressed.

15 determinands have been measured at this site

Alky pH 4.5
Ammonia(N)
BOD ATU
Chloride Ion
Cond @ 25C
N Oxidised
NH3 un-ion
NO FLOW/SAMP
Nitrate-N
Nitrite-N
O Diss %sat
Orthophospht
Oxygen Diss
Temp Water
pH

Displaying the twenty most recent samples. You can see all 93 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 4 Sep 2023 to 18 Jun 2024

Notation	Determinand	Units	4 Sep 2023 09:47	16 Oct 2023 09:04	20 Nov 2023 09:17	5 Dec 2023 10:02	15 Jan 2024 10:03	19 Feb 2024 14:05	18 Mar 2024 12:07	15 Apr 2024 10:29	13 May 2024 10:32	18 Jun 2024 10:11
0061	pH		7.69	7.91	7.9	7.83	8.25	7.94	8.04	8.08	7.98	8.04
0076	Temperature of Water	°C	14.9	9.6	9.3	6.2	2	8.6	10.6	8.4	14.5	12.4
0077	Conductivity at 25 C	μs/cm	915	783	759	563	762	649	683	735	783	773
0085	BOD : 5 Day ATU	mg/l						1.1	1.1	2.8	1.1	1.2
0111	Ammoniacal Nitrogen as N	mg/l	0.032	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	0.29	21	15	9.4	11	9.3	8.5	6.7	5.2	4.1
0117	Nitrate as N	mg/l	0.286	21	15	9.39	11	9.29	8.49	6.69	5.18	4.08
0118	Nitrite as N	mg/l	< 0.004	0.019	0.019	0.0061	0.015	0.012	0.0095	0.011	0.019	0.024
0119	Ammonia un-ionised as N	mg/l	0.00041	< 0.00043	< 0.00041	< 0.00028	< 0.0003	< 0.00043	< 0.00057	0.00049	< 0.00073	< 0.00065
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	360	250	270	200	290	260	270	300	320	330
0180	Orthophosphate, reactive as P	mg/l	0.017	< 0.01	< 0.01	0.028	0.019	0.019	0.012	< 0.01	< 0.01	0.017
9901	Oxygen, Dissolved, % Saturation	%	44.2	84.5	87.4	88.9	89.6	94.4	107.4	91.2	81.1	81.1
9924	Oxygen, Dissolved as O2	mg/l	4.46	9.61	10	11	12.4	11	11.9	10.7	8.25	8.64

Samples from 18 Oct 2019 to 3 Aug 2023

Notation	Determinand	Units	18 Oct 2019 11:13	11 Nov 2019 12:23	3 Dec 2019 10:54	8 Jan 2020 12:13	4 Feb 2020 10:38	11 Mar 2020 10:03	21 Apr 2023 08:37	18 May 2023 10:15	16 Jun 2023 08:37	3 Aug 2023 13:27
0061	pH		7.91	7.88	8.15	8.05	8.26	8.23	7.83	7.85	7.74	7.93
0076	Temperature of Water	°C	11.4	8.1	6.3	8.4	5.1	7.8	9.1	11.3	13.6	15.7
0077	Conductivity at 25 C	μs/cm	825	583	755	774	763	766	797	843	868	734
0085	BOD : 5 Day ATU	mg/l	2	1.41	< 1	1	1.2	3.6		< 1	< 5
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	0.034	< 0.03	< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	19	9.32	13	12	9.3	9.6	13	6.9	< 0.2	20
0117	Nitrate as N	mg/l	19	9.31	13	12	9.29	9.59	13	6.88	< 0.196	20
0118	Nitrite as N	mg/l	0.016	0.0069	0.025	0.021	0.013	0.011	0.019	0.017	< 0.004	0.026
0119	Ammonia un-ionised as N	mg/l	< 0.00049	< 0.00036	< 0.00042	< 0.00049	< 0.00038	0.00053	< 0.00035	< 0.00043	< 0.0004	< 0.00071
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	270	216	270	300	280	280	270	310	370	260
0180	Orthophosphate, reactive as P	mg/l	0.013	0.065	0.015	0.053	0.028	0.01	< 0.01	< 0.01	0.01	0.012
9901	Oxygen, Dissolved, % Saturation	%	83.2	81.8	77.2	93.6	94.2	94.5	77.8	75.7	51.8	78.6
9924	Oxygen, Dissolved as O2	mg/l	9.07	9.65	9.52	11	12	11.2	8.96	8.27	5.37	7.79

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sampling point Unnamed River U/S Of Rowston Stw

Determinands

Sampling results

Samples from 4 Sep 2023 to 18 Jun 2024

Samples from 18 Oct 2019 to 3 Aug 2023

sampling point
Unnamed River U/S Of Rowston Stw